This list is for owners who want to track visits, weight and drawer level from a phone. A box qualifies if it works with a brand app. Check which features are free, since some, like Whisker's facial recognition and long history, need a paid membership, and check whether the app needs 2.4 GHz WiFi. How we score.
Open top box for big or wary cats, rated up to 33 lb
Holds first because it has the best test average here, with 4.9/5 from Catster and 4/5 from Cats.com. It costs about $30 more than the PuraMax 2 below but scored clearly higher. Its 13.86 in entry is high for senior cats, and Cats.com flagged early bin full lockouts.
CAT WEIGHT 2.2 to 33 lbMAX CATS Not stated; marketed for multi cat homesLITTER Clumping granularWASTE DRAWER 11.23 L binSCORE 8.6
Mid priced drum box with 12 sensors and a sealed bin
Shares the lowest price here with the SmartSpin, and Cats.com scored it 3.8/5, a bit above the SmartSpin's 3.6/5, which keeps it second. It trails the M1 on test results. Cats.com named it Best Odor Control, but its cats over ten pounds ignored it and it works poorly on carpet.
CAT WEIGHT 3.3 to 22 lbMAX CATS Not stated; app tracks each cat by weightLITTER Clay, tofu, cornWASTE DRAWER 7 L sealed binSCORE 8.3
Compact app connected box from a long running US pet brand
Ties the PuraMax 2 on price but scored slightly lower, 3.6/5 from Cats.com in a month long multi cat test. It ranks above the CATLINK because it costs about $50 less. It is compact, but the entry sits about 12 in up with no step, and it is not suited to large cats.
CAT WEIGHT Up to 25 lbMAX CATS Not stated; marketed for multi cat homesLITTER Clumping clayWASTE DRAWER 6 L sealed drawerSCORE 8.0
Plumbed box that washes reusable granules and flushes waste
Cats.com scored it 4.1/5, higher than the CATLINK, but it costs about $50 more and lands just behind on our score. It ties the SNOW+ at 7.4 and ranks ahead because it costs about $30 less. It needs a water line and drain, and odor control between cycles was weak in testing.
CAT WEIGHT Not stated by makerMAX CATS Not stated; marketed for multiple catsLITTER Washable granulesWASTE DRAWER None, flushes wasteSCORE 7.4
Enclosed globe box with anti tracking walkway for smaller cats
Cats.com scored it 4.6/5, among the best test results here, but it costs more than the five boxes above it, which pulls it to a 7.4 tie with the CatGenie. It ranks above the Litter-Robot 5 Pro because it costs about $370 less. Its 8.7 in entry is tight, and the tester's cats never used it.
CAT WEIGHT 3.3 to 20 lbMAX CATS Up to 4LITTER Clay preferredWASTE DRAWER 10 L sealed binSCORE 7.4
Whisker's flagship globe box with dual cameras and cat recognition
Matches the SNOW+ with 4.6/5 from Cats.com, which also named it Overall Best in its October 2026 roundup. It is the most expensive box here, which drops it to seventh on our value weighted score. Facial recognition and long visit history need the paid Whisker+ membership.
CAT WEIGHT 3 to 30 lbMAX CATS Up to 5LITTER Clumping clayWASTE DRAWER Sealed, carbon filterSCORE 6.4
Camera equipped PETKIT box that recognizes up to 15 cats
A camera box that recognizes up to 15 cats, with an 8 L sealed drawer, for about $400 less than the Litter-Robot 5 Pro. TechnoMeow found the camera useful for watching a senior cat but its sensors unreliable on carpet. It is not ranked yet because that review gave no numeric score.
CAT WEIGHT 3.3 to 22 lbMAX CATS Camera IDs up to 15LITTER Clay, tofu, mixedWASTE DRAWER 8 L sealed drawerSCORE not yet
Proven Litter-Robot with laser sensing, now Whisker's value pick
A proven globe box for up to 4 cats from 3 to 25 lb, about $100 less than the Litter-Robot 5. Cats.com named it Runner Up, and The Irish Times and CNN Underscored found it quiet and clean. It is not ranked yet because none of these reviews gave a numeric score.
CAT WEIGHT 3 to 25 lbMAX CATS Up to 4LITTER Clumping clayWASTE DRAWER Sealed, carbon filterSCORE not yet
Current Litter-Robot without cameras, for up to five cats
The Litter-Robot 5 Pro without cameras, for about $100 less, rated for up to 5 cats from 3 to 30 lb with WasteID urine and stool detection. 9to5Toys found the 5 series quieter and smoother than the Litter-Robot 4. It is not ranked yet because neither of its reviews gave a numeric score.
CAT WEIGHT 3 to 30 lbMAX CATS Up to 5LITTER Clumping clayWASTE DRAWER Sealed, carbon filterSCORE not yet